The volume of a gas is 450ml when it’s pressure is 1.00atm. if the temperature of the gas does not change what is the pressure when it’s volume is changed to 2.00 l?

Cobalt-60 is an artificial radioisotope that is produced in a nuclear reactor and is used as a gamma-ray source in the treatment of certain types of cancer. if the wavelength of the gamma radiation from a cobalt-60 source is 1.00 × 10-3 nm, calculate the energy of a photon of this radiation.

If 3.00 g of titanium metal is reacted with 6.00 g of chlorine gas, cl2, to form 7.7 g of titanium (iv) chloride in a combination reaction, what is the percent yield of the product?

If an area has high air pressure and low humidity, what type of weather will it most likely have? plz !